<!--SIF Implementation Specification 2.2-6 (March 17, 2008)-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" targetNamespace="http://www.sifinfo.org/infrastructure/2.x" xmlns:sif="http://www.sifinfo.org/infrastructure/2.x" elementFormDefault="qualified">
  <xs:import namespace="http://www.w3.org/XML/1998/namespace" schemaLocation="imports/xml/xml.xsd" />
  <xs:complexType name="CalendarSummaryType">
    <xs:annotation>
      <xs:documentation>This object provides a summary of a school's calendar information for a given school year.</xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name="LocalId" minOccurs="0" type="sif:LocalIdType">
        <xs:annotation>
          <xs:documentation>The locally assigned identifier for this calendar.</xs:documentation>
        </xs:annotation>
      </xs:element>
      <xs:element name="Description" minOccurs="0" nillable="true" type="xs:string">
        <xs:annotation>
          <xs:documentation>Textual description of the school calendar.</xs:documentation>
        </xs:annotation>
      </xs:element>
      <xs:element name="DaysInSession" minOccurs="0" type="xs:unsignedInt">
        <xs:annotation>
          <xs:documentation>The total number of days that the school was or is anticipated to be in session during the school year.  Also included are days on which the education institution facility is closed and the student body as a whole is engaged in planned activities off-campus under the guidance and direction of staff members.</xs:documentation>
        </xs:annotation>
      </xs:element>
      <xs:element name="StartDate" minOccurs="0" nillable="true" type="xs:date">
        <xs:annotation>
          <xs:documentation>The first calendar date, whether or not instruction was provided. If both CalendarSummary and CalendarDate objects are supported, StartDate must be the date of the first chronological instance of CalendarDate for the school's calendar.</xs:documentation>
        </xs:annotation>
      </xs:element>
      <xs:element name="EndDate" minOccurs="0" nillable="true" type="xs:date">
        <xs:annotation>
          <xs:documentation>The last calendar date, whether or not instruction was provided. If both CalendarSummary and CalendarDate objects are supported, EndDate must be the last chronological instance of CalendarDate for the school's calendar.</xs:documentation>
        </xs:annotation>
      </xs:element>
      <xs:element name="FirstInstructionDate" minOccurs="0" nillable="true" type="xs:date">
        <xs:annotation>
          <xs:documentation>The first day of student instruction.</xs:documentation>
        </xs:annotation>
      </xs:element>
      <xs:element name="LastInstructionDate" minOccurs="0" nillable="true" type="xs:date">
        <xs:annotation>
          <xs:documentation>The last day of student instruction (including days or times that students are present for purposes of testing and/or evaluation, but not including whole or part-days whose sole purposes is for distribution of report cards).</xs:documentation>
        </xs:annotation>
      </xs:element>
      <xs:element name="GraduationDate" minOccurs="0" nillable="true" type="sif:GraduationDateType">
        <xs:annotation>
          <xs:documentation>Date of graduation ceremony.</xs:documentation>
        </xs:annotation>
      </xs:element>
      <xs:element name="InstructionalMinutes" minOccurs="0" nillable="true" type="xs:unsignedInt">
        <xs:annotation>
          <xs:documentation>The total number of instructional minutes for this calendar for the school year.</xs:documentation>
        </xs:annotation>
      </xs:element>
      <xs:element name="MinutesPerDay" minOccurs="0" nillable="true" type="xs:unsignedInt">
        <xs:annotation>
          <xs:documentation>The number of minutes in the day in which the school is normally in session.</xs:documentation>
        </xs:annotation>
      </xs:element>
      <xs:element name="GradeLevels" minOccurs="0" nillable="true" type="sif:GradeLevelsType">
        <xs:annotation>
          <xs:documentation>Collection of grade levels applicable to this school calendar.</xs:documentation>
        </xs:annotation>
      </xs:element>
      <xs:element name="SIF_Metadata" minOccurs="0" nillable="true" type="sif:SIF_MetadataType" />
      <xs:element name="SIF_ExtendedElements" minOccurs="0" nillable="true" type="sif:SIF_ExtendedElementsType" />
    </xs:sequence>
    <xs:attribute name="RefId" use="required" type="sif:RefIdType">
      <xs:annotation>
        <xs:documentation>The ID (GUID) of the calendar to which this information relates.</xs:documentation>
      </xs:annotation>
    </xs:attribute>
    <xs:attribute name="SchoolInfoRefId" use="required" type="sif:IdRefType">
      <xs:annotation>
        <xs:documentation>The ID (GUID) of the school for which this calendar information is being reported.</xs:documentation>
      </xs:annotation>
    </xs:attribute>
    <xs:attribute name="SchoolYear" use="required" type="sif:SchoolYearType">
      <xs:annotation>
        <xs:documentation>School year for which the information is applicable, expressed as the four-digit year in which the school year ends (e.g., "2007" for the 2006-07 school year).</xs:documentation>
      </xs:annotation>
    </xs:attribute>
  </xs:complexType>

  <xs:element name="CalendarSummary" type="sif:CalendarSummaryType" />

</xs:schema>